Aliasing carapace → exoskeleton
Link to alias

Reason:

Carapace is a term for the outer layer of exoskeletons, which I feel is redundant when it's just, in the end... an exoskeleton. Ergo, this alias suggestion.

If most people disagree with me on this, then I suggest an implication to exoskeleton instead, as carapace IS the exoskeleton, just the outer layer of it.

I think an implication would be better, as many things which have an exoskeleton do not have a carapace.

A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron